Apparatus for making lampblack.



No. 660,973. Patented ont. 3o, |9oo.

F. SANDERS. APPARATUS FOB MAKING LAMPBLACK. (Applicacion med Nov'. 11. 1899.) (No Model.)

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JOHN F. SANDERS, OF CHICAGO, ILLINOIS, ASSIGNOR TO HARRY BROWN, OF SAME PLACE.

APPARATUS FOR MAKING LAIVIPBLACK.

:SPECIFICATION forming part of Letters Patent No. 660,97 3, dated October 30, 1900. Application filed November l1, 1899. Serial No. 736,581. (No model.)

T0 all whom t may concern:

Be it known that I, JOHN F. SANDERS, a citizen of the United States, residing at Chicago, Illinois, have invented certain new and useful Improvements in the Manufacture of Lampblack, of which the following is a specification.

In the drawings, Figure 1 is a vertical section taken on the line 1 of Fig. 2. Fig. 2 is a plan section taken on line 2 of Fig. 1, and Fig. 3 is a vertical longitudinal section of a burner.

To effect the burning of the gas in the most desirable and advantageous way, I arrange for its burning in the production of the lampblack in a combustion-chamber F. A number of burners f are arranged to enter this combustion-chamberand to receive their supply of gas from the pipe e', leading from a source of gas-supply. As shown in the drawings, I have provided the pipe e with a crosspipe e2, from which the burners lead into the combustion-chamber. As represented, I have illustrated three burners in Fig. 2, though it will be understood that as small or as large a number of burners may be employed as desired and as can be supplied with gas from the retort or retorts employed, The bu rners f are constructed, preferably, as shown in Fig. 3, which gives a sectional view. The outer pipe is made larger than the gas-inlet pipe f', so that there will be an annular space between the two, as shown in Fig. 3. A pipe F leads into this annular space and admits a supply of air to be mixed and mingled with the gas for the purposes of combustion. By the use of a valve f2 in this air-pipe the quantity of l air admitted may be regulated and adjusted to suit the particular exgencies of the case. The ends of the burners are flattened,as shown in Fig. 2, so as to afford a wide thin opening for the egress of the mingled gas and air. Immediately in front of the burners I arrange pipes G-preferably three of them-arranged in triangular position, as shown in Figs. 1 and 3. I also prefer that one of these pipes shall be larger than the other two and that it shall be located directly in front of the orifices of the burners, while the other two are located, respectively, at each side of such orifices, so that the commingled gas and air passes between and among the pipes G as it emerges from the the smaller pipes or tubes.

burners. The form and arrangement of depositing pipes or tubes shown and described present a triangular space, into which the flame is projected, so as togive the flame a narrow entrance and a wide spread, thereby securing an increased effect and result in the projection and deposit of' lampblack by reason of the increased surface over which the fiame passes. The flame striking the larger pipe or tube will be divided and spread by the contact and made to enter and pass into the space between the large pipe or tubeand This dividingand spreading of the names over the adjoining surfaces of the three pipes gives an increased effect, owing to the increased collecting-surface provided by the large and small pipes or tubes. rlhe locating of the pipes in a triangular shape and in close proximity one to the other provides a safeguard against the admission and force of the air1 that would impair the production and depositing of the lam pblack, and also confines the area of combustion to a very small space defined by the contact-surfaces of the pipes for the flame. The center large pipe is in the direct path of the forward projection of the flame, and by so locating such pipe the dame is divided and sent to both sides to contact all three of the pipes, and at the same time the center large pipe furnishes an effective coolingsurface for the center of the flame, thereby increasing the lampblack-producing qualities of the flame.

The gas and air as they emerge from the orifices of the burners may be ignited by an Velectric spark or in any other desired way.

When ignited the flames spread through and among the pipes G. Only enough air is admitted through the air-pipe to maintain combustion at that point best adapted for the production of lampblack.

I have arranged peepholes H at the sides of the combustion-cham ber, which may be closed by glass or mica, but which permit the attendant to inspect the condition existing in the combustion-chamber as often as desired. I have also provided the pipes G with angular ends g, extending out at the sides of the cornbustion-chalnber, so that they may be turned up and arranged to present a new surface to IOO the fiame when one side has become coated or covered with lampblack. This turning of the pipes serves to shake and clear off the lampblack that has formed or accumulated between the pipes. A door I permits access to the com bnstion-chamber whenever desired for the purpose of removing the Ilampblack formed and accumulated therein. I also prefer to provide a removable cover to the comlnistion-chamber, so as to permit access from the top as often as maybe desired for the removal of lampblack or otherwise and for the admission of cold air to effect the rapid cooling of the combustion-chamber to permit such removal. In my preferred form I arrange a number of sheetmetal plates J, preferably provided with fianges at their edges to impart sufficient. strength and stiffness to them. These plates are laid across the top of the combustion-chamber and retained in place in any desired manner. When itis desired they can be removed, one or more at a time, to permit access to the interior of the combustion-chamber. If desired, a small open space may be left at the top of the combustionchamber for the escape of steam or other products of combustion, though I have considered it unnecessary to show such fine or opening in the drawings.

The combustion chamber is preferably made of brick, and in order to prevent brickdust or other impurities from the Walls and Hoor getting into and adulterating the lampblack I prefer to line the interior of the combustion-chamber with sheet metal.

The lampblack as produced in my combustion-chamber requires no further manipulation or treatment for the manufacture of carbons and for many uses in the arts, but is ready to be conveyed directly to the carbonfactory and to be applied to other uses--as, for instance, in the manufacture of printer-s ink. Y

What I regard as new, and desire to secure by Letters Patent, is

l. In an apparatus for manufacturimgY lampblack, the combination of a confined combustion-chamber, a burner entered into the combustion-chamber, two deposit-pipes of small diameter and a third deposit-pipe of larger diameter at the rear of the small deposit-pipes, forming, in conjunction with the small pipes, a triangular arrangement of pipes, into the space between which the dame from the burner is projected, substantially as described.

2. In an apparatus for manufacturing lampblack, the combination of a burner having a flattened nozzle, two pipes of small diameter located side by side and into the space lietween which the flame from the burner is projected, and a third pipe of increased diameter loe-ated in line with the space between the two pipes and rearwardly of such pipes, substantially as described.

3. In an apparatus for manufacturinglampblack, the combination of a confined combustion-chamber, a burner entered into the combust-ion-cha mber, and a plurality of rotatable horizontally-disposed deposit-pipes arranged in triangular position and in front of the burner, substantially as described.

4. In an apparatus for man u factu ring lam pblack, the combination of a confined combustion-chamber, a burner entered into the combustion-chamber, and a pluraiity of rotatable horizontally disposed deposit pipes of unequal diameters arranged in triangular position and in front of the burner with the pipes of smaller diameter next to the burner, substantially as described.

5. In an apparatus for manufacturing lampblack, the combination of a confined combustion-chamber, a plurality of horizontally-disposed burners having flattened nozzles, and a plu rality of rotatable horizontally-disposed deposit-pipes arranged in triangular position and in front of the burners, substantially as described.

JOHN F. SANDERS.

Witnesses:

THOMAS A. BANNING, THoMAs B. MCGREGOR. 

